package Java8实战._2_Stream_使用流._3_查找和匹配;

import Java8实战._2_Stream_使用流.Dish;

import java.util.Arrays;
import java.util.List;

public class _1_检查谓词是否至少匹配一个元素 {

    public static void main(String[] args) {
        List<Dish> menu = Arrays.asList(
                new Dish("pork",false,800, Dish.Type.MEAT),
                new Dish("beef",false,700, Dish.Type.MEAT),
                new Dish("chicken", false, 400, Dish.Type.MEAT),
                new Dish("french fries", true, 530, Dish.Type.OTHER),
                new Dish("rice", true, 350, Dish.Type.OTHER),
                new Dish("season fruit", true, 120, Dish.Type.OTHER),
                new Dish("pizza", true, 550, Dish.Type.OTHER),
                new Dish("prawns", false, 300, Dish.Type.FISH),
                new Dish("salmon", false, 450, Dish.Type.FISH)
        );

        /**
         * 菜单中是否有素食
         */
       boolean isTrue = menu.stream()
                .anyMatch(Dish::isVegetarian);

       if (isTrue){
           System.out.println("菜单中有素食");
       }
    }
}

















